Biology / Bio 2539 · Atom · ~20 seconds
Leaf Arrangement: Phyllotaxy
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Phyllotaxy names a plant's characteristic leaf arrangement: alternate or spiral leaves place one per node, opposite leaves place two, and whorled leaves place three or more.
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A plant with opposite phyllotaxy shows two leaves emerging at each node, positioned directly across from each other.
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Phyllotaxy is species-characteristic, not universal — each species keeps one consistent pattern rather than mixing arrangements freely.
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